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Rayannavar S, Mv SK, Bembalgi M, Shankargouda S, Acharya A, Doddamani M, Hiremath V, Shah MA. Evaluation of Osteoconductive and Antimicrobial Properties of Novel Graphene on Dental Implants: An In Vitro Study. Cureus 2024; 16:e54172. [PMID: 38496143 PMCID: PMC10941632 DOI: 10.7759/cureus.54172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 02/08/2024] [Indexed: 03/19/2024] Open
Abstract
Introduction Graphene oxide (GO) has emerged as a promising material in dentistry, leveraging its exceptional properties. This study evaluates the physicochemical attributes of GO and elucidates its derived biological properties. These encompass biocompatibility, antibacterial efficacy, as well as its influence on osteogenic and odontogenic differentiation processes. Understanding the intricate interplay between the physicochemical and biological aspects of GO provides valuable insights into its potential applications in various dental contexts. Materials and methods The study group (so; titanium discs surface coated with GO) and the control group (co; plain/uncoated machined titanium discs) were divided based on cell attachment and cell proliferation assays (n=60). These groups were further divided into subgroups (n=30) based on the tested time intervals, specifically 24 hours, 48 hours, and 72 hours. The study and controlgroups were further subdivided into three subgroups (n=10) based on the microorganisms tested i.e Porphyromonas gingivalis, Prevotella intermedia and Fusobacteria nucleatum. Results The results of this in vitro study suggest that GO-coated titanium dental implants have both increased osteogenic potential and antimicrobial efficacy. Graphene has good potential as a promising alternative to traditional surface treatments, and a graphene-coated implant can be used for enhanced osseointegration. Conclusion The osteogenic potential and the cell attachment were higher on titanium surfaces coated with GO nanoparticles when compared to plain titanium discs at 24, 48 and 72 hours respectively.
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Affiliation(s)
- Sounyala Rayannavar
- Department of Prosthodontics Crown and Bridge, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, IND
| | - Sunil Kumar Mv
- Department of Prosthodontics Crown and Bridge, Jaipur Dental College, Maharaj Vinayak Global University, Jaipur, IND
| | - Mahantesh Bembalgi
- Department of Prosthodontics Crown and Bridge, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, IND
| | - Swapnil Shankargouda
- Department of Prosthodontics Crown and Bridge, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, IND
| | - Aditya Acharya
- Department of Prosthodontics Crown and Bridge, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, IND
| | - Mallikarjun Doddamani
- Department of Prosthodontics Crown and Bridge, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, IND
| | - Vinuta Hiremath
- Department of Prosthodontics Crown and Bridge, Private Practitioner, Belagavi, IND
| | - Mehul A Shah
- Research scholar, Department of Public Health Dentistry, KLE Vishwanath Katti Institute of Dental Sciences, KLE Academy of Higher Education and Research, Belagavi, IND
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Sellin ML, Seyfarth-Sehlke A, Aziz M, Fabry C, Wenke K, Høl PJ, Rios-Mondragon I, Cimpan MR, Frank M, Bader R, Jonitz-Heincke A. Isolation of TiNbN wear particles from a coated metal-on-metal bearing: Morphological characterization and in vitro evaluation of cytotoxicity in human osteoblasts. J Biomed Mater Res B Appl Biomater 2024; 112:e35357. [PMID: 38247242 DOI: 10.1002/jbm.b.35357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 10/18/2023] [Accepted: 11/15/2023] [Indexed: 01/23/2024]
Abstract
To improve the wear resistance of articulating metallic joint endoprostheses, the surfaces can be coated with titanium niobium nitride (TiNbN). Under poor tribological conditions or malalignment, wear can occur on these implant surfaces in situ. This study investigated the biological response of human osteoblasts to wear particles generated from TiNbN-coated hip implants. Abrasive particles were generated in a hip simulator according to ISO 14242-1/-2 and extracted with Proteinase K. Particle characteristics were evaluated by electron microscopy and energy dispersive x-ray spectroscopy (EDS), inductively coupled plasma mass spectrometry (ICP-MS) and dynamic light scattering (DLS) measurements. Human osteoblasts were exposed to different particle dilutions (1:20, 1:50, and 1:100), and cell viability and gene expression levels of osteogenic markers and inflammatory mediators were analyzed after 4 and 7 days. Using ICP-MS, EDS, and DLS measurements, ~70% of the particles were identified as TiNbN, ranging from 39 to 94 nm. The particles exhibited a flat and subangular morphology. Exposure to particles did not influence cell viability and osteoblastic differentiation capacity. Protein levels of collagen type 1, osteoprotegerin, and receptor activator of nuclear factor κB ligand were almost unaffected. Moreover, the pro-inflammatory response via interleukins 6 and 8 was minor induced after particle contact. A high number of TiNbN wear particles only slightly affected osteoblasts' differentiation ability and inflammatory response compared to metallic particles. Nevertheless, further studies should investigate the role of these particles in peri-implant bone tissue, especially concerning other cell types.
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Affiliation(s)
- Marie-Luise Sellin
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | - Anika Seyfarth-Sehlke
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | - Mahammad Aziz
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
| | | | | | - Paul Johan Høl
- Department of Orthopaedic Surgery, Biomatlab, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, Biomaterials, University of Bergen, Bergen, Norway
| | - Ivan Rios-Mondragon
- Department for Clinical Dentistry Biomaterials, University of Bergen, Bergen, Norway
| | - Mihaela Roxana Cimpan
- Department for Clinical Dentistry Biomaterials, University of Bergen, Bergen, Norway
| | - Marcus Frank
- Medical Biology and Electron Microscopy Center, Rostock University Medical Center, Rostock, Germany
- Department Life, Light and Matter, University of Rostock, Rostock, Germany
| | - Rainer Bader
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
- Department Life, Light and Matter, University of Rostock, Rostock, Germany
| | - Anika Jonitz-Heincke
- Department of Orthopaedics, Biomechanics and Implant Technology Research Laboratory, Rostock University Medical Center, Rostock, Germany
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Schulze M, Nonhoff M, Hasselmann J, Fobker M, Niemann S, Theil C, Gosheger G, Puetzler J. Shock Wave-Activated Silver-Loaded Biopolymer Implant Coating Eliminates Staphylococcus epidermidis on the Surface and in the Surrounding of Implants. Pharmaceutics 2023; 15:2670. [PMID: 38140011 PMCID: PMC10747100 DOI: 10.3390/pharmaceutics15122670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/15/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
Bacterial biofilms on foreign surfaces are considered a primary cause of implant-related infections, which are challenging to treat. A new implant coating was developed, containing anti-infective silver within a biocompatible polymer carrier substance. In addition to its passive effect on the implant surface, highly concentrated anti-infective silver can be released as needed via the application of high-energy shock waves. This intervention could be applied transcutaneously in a clinical setting without the need for additional surgery. We investigated the inhibition of biofilm formation and the effectiveness of eradication after activation of the coating via shock waves in an in vitro biofilm model using Staphylococcus epidermidis RP62A. This was performed via scanning electron microscopy and quantitative microbiology. Additionally, we examined the cytotoxicity of the new coating on normal human fibroblasts and Saos-2 osteoblast-like cells, depending on the silver concentration. All studies were compared to uncoated titanium surfaces Ti6Al4V and a conventional electroplated silver coating. Cytotoxicity toward normal human fibroblasts and Saos-2 osteoblast-like cells increased with higher silver content but remained tolerable at 6%. Compared to uncoated Ti6Al4V and the electroplated silver coating, the new coating with a silver content of 4% and 6% exhibited a significant reduction in adherent bacteria by a factor of approximately 1000. This was also evident via microscopic examination of the surface morphology of the biofilms. Furthermore, following shock wave activation, no bacteria were detectable on either the implant or in the surrounding fluid after a 24 h period.
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Affiliation(s)
- Martin Schulze
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, 48149 Münster, Germany
| | - Melanie Nonhoff
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, 48149 Münster, Germany
| | - Julian Hasselmann
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, 48149 Münster, Germany
- Materials Engineering Laboratory, Department of Mechanical Engineering, University of Applied Sciences Muenster, 48565 Steinfurt, Germany
| | - Manfred Fobker
- Central Laboratory, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Silke Niemann
- Institute of Medical Microbiology, Muenster University Hospital, 48149 Münster, Germany
| | - Christoph Theil
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, 48149 Münster, Germany
| | - Georg Gosheger
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, 48149 Münster, Germany
| | - Jan Puetzler
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, 48149 Münster, Germany
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Puetzler J, Hasselmann J, Nonhoff M, Fobker M, Niemann S, Theil C, Gosheger G, Schulze M. On-Demand Release of Anti-Infective Silver from a Novel Implant Coating Using High-Energy Focused Shock Waves. Pharmaceutics 2023; 15:2179. [PMID: 37765150 PMCID: PMC10537269 DOI: 10.3390/pharmaceutics15092179] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023] Open
Abstract
Implant-related infections are a significant concern in orthopedic surgery. A novel anti-infective implant coating made of bioresorbable polymer with silver nitrate was developed. A controlled release of silver ions into the vicinity of the prosthesis can be triggered on-demand by extracorporeal shock waves to effectively combat all clinically relevant microorganisms. Microscopy techniques were used to examine the effects of shock wave application on coated titanium discs. Cytotoxicity was measured using a fibroblast proliferation assay. The anti-infective effect was assessed by monitoring the growth curves of three bacterial strains and by conventional culture. Microscopic analysis confirmed surface disruption of the coatings, with a complete release of silver in the focus area after shock wave application. Spectrometry detected an increase in silver concentration in the surrounding of the discs that surpassed the minimum inhibitory concentration (MIC) for both S. epidermidis RP62A and E. coli ATCC 25922. The released silver demonstrated an anti-infective effect, significantly inhibiting bacterial growth, especially at 6% and 8% silver concentrations. Cytotoxicity testing showed decreasing fibroblast viability with increasing silver concentration in the coating, with 6% silver maintaining viability above 25%. Compared to a commonly used electroplated silver coating on the market, the new coating demonstrated superior antimicrobial efficacy and lower cytotoxicity.
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Affiliation(s)
- Jan Puetzler
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Julian Hasselmann
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
- Materials Engineering Laboratory, Department of Mechanical Engineering, University of Applied Sciences Muenster, 48565 Steinfurt, Germany
| | - Melanie Nonhoff
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Manfred Fobker
- Central Laboratory, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Silke Niemann
- Institute of Medical Microbiology, Muenster University Hospital, Domagkstraße 10, 48149 Muenster, Germany
| | - Christoph Theil
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Georg Gosheger
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Martin Schulze
- Department of General Orthopedics and Tumor Orthopedics, Muenster University Hospital, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
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Arteaga A, Biguetti CC, Lakkasetter Chandrashekar B, Mora J, Qureshi A, Rodrigues DC. Biological Effects of New Titanium Surface Coatings Based on Ionic Liquids and HMGB1: A Cellular and Molecular Characterization in Lewis Rats. ACS Biomater Sci Eng 2023; 9:4709-4719. [PMID: 37418317 DOI: 10.1021/acsbiomaterials.3c00367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
High Mobility Group Box 1 (HMGB1) is a redox-sensitive molecule that plays dual roles in tissue healing and inflammation. We previously demonstrated that HMGB1 is stable when anchored by a well-characterized imidazolium-based ionic liquid (IonL), which serves as a delivery vehicle for exogenous HMGB1 to the site of injury and prevents denaturation from surface adherence. However, HMGB1 exists in different isoforms [fully reduced HMGB1 (FR), a recombinant version of FR resistant to oxidation (3S), disulfide HMGB1 (DS), and inactive sulfonyl HMGB1(SO)] that have distinct biological functions in health and disease. Thus, the goal of this study was to evaluate the effects of different recombinant HMGB1 isoforms on the host response using a rat subcutaneous implantation model. A total of 12 male Lewis rats (12-15 weeks) were implanted with titanium discs containing different treatments (n = 3/time point; Ti, Ti-IonL, Ti-IonL-DS, Ti-IonL-FR, and Ti-IonL-3S) and assessed at 2 and 14 days. Histological (H&E and Goldner trichrome staining), immunohistochemistry, and molecular analyses (qPCR) of surrounding implant tissues were employed for analysis of inflammatory cells, HMGB1 receptors, and healing markers. Ti-IonL-DS samples resulted in the thickest capsule formation, increased pro-inflammatory, and decreased anti-inflammatory cells, while Ti-IonL-3S samples demonstrated suitable tissue healing similar to uncoated Ti discs, as well as an upregulation of anti-inflammatory cells at 14 days compared to all other treatments. Thus, results from this study demonstrated that Ti-IonL-3S are safe alternatives for Ti biomaterials. Future studies are necessary to investigate the healing potential of Ti-IonL-3S in osseointegration scenarios.
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Affiliation(s)
- Alexandra Arteaga
- Department of Bioengineering, The University of Texas at Dallas, Richardson 75080-3021, Texas, United States
| | - Claudia Cristina Biguetti
- Department of Surgery and Biomechanics, School of Podiatric Medicine, The University of Texas Rio Grande Valley, Harlingen 78539, Texas, United States
| | | | - Jimena Mora
- Department of Bioengineering, The University of Texas at Dallas, Richardson 75080-3021, Texas, United States
| | - Adeena Qureshi
- Department of Bioengineering, The University of Texas at Dallas, Richardson 75080-3021, Texas, United States
| | - Danieli C Rodrigues
- Department of Bioengineering, The University of Texas at Dallas, Richardson 75080-3021, Texas, United States
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6
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Hammami I, Gavinho SR, Jakka SK, Valente MA, Graça MPF, Pádua AS, Silva JC, Sá-Nogueira I, Borges JP. Antibacterial Biomaterial Based on Bioglass Modified with Copper for Implants Coating. J Funct Biomater 2023; 14:369. [PMID: 37504864 PMCID: PMC10381177 DOI: 10.3390/jfb14070369] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/07/2023] [Accepted: 07/12/2023] [Indexed: 07/29/2023] Open
Abstract
Biofilm-related implant infections pose a substantial threat to patients, leading to inflammation in the surrounding tissue, and often resulting in implant loss and the necessity for additional surgeries. Overcoming this implantology challenge is crucial to ensure the success and durability of implants. This study shows the development of antibacterial materials for implant coatings by incorporating copper into 45S5 Bioglass®. By combining the regenerative properties of Bioglass® with the antimicrobial effects of copper, this material has the potential to prevent infections, enhance osseointegration and improve the long-term success of implants. Bioglasses modified with various concentrations of CuO (from 0 to 8 mol%) were prepared with the melt-quenching technique. Structural analysis using Raman and FTIR spectroscopies did not reveal significant alterations in the bioglasses structure with the addition of Cu. The antibacterial activity of the samples was assessed against Gram-positive and Gram-negative bacteria, and the results demonstrated significant inhibition of bacterial growth for the bioglass with 0.5 mol% of CuO. Cell viability studies indicated that the samples modified with up to 4 mol% of CuO maintained good cytocompatibility with the Saos-2 cell line at extract concentrations up to 25 mg/mL. Furthermore, the bioactivity assessment demonstrated the formation of a calcium phosphate (CaP)-rich layer on the surfaces of all bioglasses within 24 h. Our findings show that the inclusion of copper in the bioglass offers a significant enhancement in its potential as a coating material for implants, resulting in notable advancements in both antibacterial efficacy and osteointegration properties.
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Affiliation(s)
- Imen Hammami
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal
| | | | - Suresh Kumar Jakka
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal
| | | | | | - Ana Sofia Pádua
- I3N-CENIMAT and Physics Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Jorge Carvalho Silva
- I3N-CENIMAT and Physics Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Isabel Sá-Nogueira
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - João Paulo Borges
- I3N-CENIMAT and Materials Science Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
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Uzulmez B, Demirsoy Z, Can O, Gulseren G. Bioinspired Multi-Layer Biopolymer-Based Dental Implant Coating for Enhanced Osseointegration. Macromol Biosci 2023; 23:e2300057. [PMID: 37097091 DOI: 10.1002/mabi.202300057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/13/2023] [Indexed: 04/26/2023]
Abstract
The major drawbacks of metal-based implants are weak osseointegration and post-operational infections. These limitations restrict the long-term use of implants that may cause severe tissue damage and replacement of the implant. Recent strategies to enhance the osseointegration process require an elaborate fabrication process and suffer from post-operative complications. To address the current challenges taking inspiration from the extracellular matrix (ECM), the current study is designed to establish enhanced osseointegration with lowered risk of infection. Natural biopolymer pectin, peptide amphiphiles, and enzyme-mimicking fullerene moieties are governed to present an ECM-like environment around the implant surfaces. This multifunctional approach promotes osseointegration via inducing biomineralization and osteoblast differentiation. Application of the biopolymer-based composite to the metal surfaces significantly enhances cellular attachment, supports the mineral deposition, and upregulates osteoblast-specific gene expression. In addition to the osteoinductive properties of the constructed layers, the inherent antimicrobial properties of multilayer coating are also used to prevent infection possibility. The reported biopolymer-artificial enzyme composite demonstrates antimicrobial activity against Escherichia coli and Bacillus subtilis as a multifunctional surface coating.
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Affiliation(s)
- Betul Uzulmez
- Department of Biotechnology, Konya Food and Agriculture University, Konya, 42080, Turkey
| | - Zeynep Demirsoy
- Department of Biotechnology, Konya Food and Agriculture University, Konya, 42080, Turkey
| | - Ozge Can
- Department of Molecular Biology and Genetics, Konya Food and Agriculture University, Konya, 42080, Turkey
- Department of Bioengineering, Izmir Institute of Technology, Izmir, 35430, Turkey
| | - Gulcihan Gulseren
- Department of Molecular Biology and Genetics, Konya Food and Agriculture University, Konya, 42080, Turkey
- Department of Biotechnology, Konya Food and Agriculture University, Konya, 42080, Turkey
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Hammami I, Gavinho SR, Pádua AS, Sá-Nogueira I, Silva JC, Borges JP, Valente MA, Graça MPF. Bioactive Glass Modified with Zirconium Incorporation for Dental Implant Applications: Fabrication, Structural, Electrical, and Biological Analysis. Int J Mol Sci 2023; 24:10571. [PMID: 37445749 DOI: 10.3390/ijms241310571] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Implantology is crucial for restoring aesthetics and masticatory function in oral rehabilitation. Despite its advantages, certain issues, such as bacterial infection, may still arise that hinder osseointegration and result in implant rejection. This work aims to address these challenges by developing a biomaterial for dental implant coating based on 45S5 Bioglass® modified by zirconium insertion. The structural characterization of the glasses, by XRD, showed that the introduction of zirconium in the Bioglass network at a concentration higher than 2 mol% promotes phase separation, with crystal phase formation. Impedance spectroscopy was used, in the frequency range of 102-106 Hz and the temperature range of 200-400 K, to investigate the electrical properties of these Bioglasses, due to their ability to store electrical charges and therefore enhance the osseointegration capacity. The electrical study showed that the presence of crystal phases, in the glass ceramic with 8 mol% of zirconium, led to a significant increase in conductivity. In terms of biological properties, the Bioglasses exhibited an antibacterial effect against Gram-positive and Gram-negative bacteria and did not show cytotoxicity for the Saos-2 cell line at extract concentrations up to 25 mg/mL. Furthermore, the results of the bioactivity test revealed that within 24 h, a CaP-rich layer began to form on the surface of all the samples. According to our results, the incorporation of 2 mol% of ZrO2 into the Bioglass significantly improves its potential as a coating material for dental implants, enhancing both its antibacterial and osteointegration properties.
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Affiliation(s)
- Imen Hammami
- I3N and Physics Department, Aveiro University, 3810-193 Aveiro, Portugal
| | | | - Ana Sofia Pádua
- I3N-CENIMAT and Physics Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Isabel Sá-Nogueira
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
- UCIBIO-Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Jorge Carvalho Silva
- I3N-CENIMAT and Physics Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
| | - João Paulo Borges
- I3N-CENIMAT and Materials Science Department, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
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Escobar K, Garrido-Miranda KA, Pulido R, Naveas N, Manso-Silván M, Hernandez-Montelongo J. Coatings of Cyclodextrin/Citric-Acid Biopolymer as Drug Delivery Systems: A Review. Pharmaceutics 2023; 15. [PMID: 36678924 DOI: 10.3390/pharmaceutics15010296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/23/2022] [Accepted: 01/12/2023] [Indexed: 01/17/2023] Open
Abstract
In the early 2000s, a method for cross-linking cyclodextrins (CDs) with citric acid (CTR) was developed. This method was nontoxic, environmentally friendly, and inexpensive compared to the others previously proposed in the literature. Since then, the CD/CTR biopolymers have been widely used as a coating on implants and other materials for biomedical applications. The present review aims to cover the chemical properties of CDs, the synthesis routes of CD/CTR, and their applications as drug-delivery systems when coated on different substrates. Likewise, the molecules released and other pharmaceutical aspects involved are addressed. Moreover, the different methods of pretreatment applied on the substrates before the in situ polymerization of CD/CTR are also reviewed as a key element in the final functionality. This process is not trivial because it depends on the surface chemistry, geometry, and physical properties of the material to be coated. The biocompatibility of the polymer was also highlighted. Finally, the mechanisms of release generated in the CD/CTR coatings were analyzed, including the mathematical model of Korsmeyer-Peppas, which has been dominantly used to explain the release kinetics of drug-delivery systems based on these biopolymers. The flexibility of CD/CTR to host a wide variety of drugs, of the in situ polymerization to integrate with diverse implantable materials, and the controllable release kinetics provide a set of advantages, thereby ensuring a wide range of future uses.
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Kennedy DG, O'Mahony AM, Culligan EP, O'Driscoll CM, Ryan KB. Strategies to Mitigate and Treat Orthopaedic Device-Associated Infections. Antibiotics (Basel) 2022; 11. [PMID: 36551479 DOI: 10.3390/antibiotics11121822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/03/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022] Open
Abstract
Orthopaedic device implants play a crucial role in restoring functionality to patients suffering from debilitating musculoskeletal diseases or to those who have experienced traumatic injury. However, the surgical implantation of these devices carries a risk of infection, which represents a significant burden for patients and healthcare providers. This review delineates the pathogenesis of orthopaedic implant infections and the challenges that arise due to biofilm formation and the implications for treatment. It focuses on research advancements in the development of next-generation orthopaedic medical devices to mitigate against implant-related infections. Key considerations impacting the development of devices, which must often perform multiple biological and mechanical roles, are delineated. We review technologies designed to exert spatial and temporal control over antimicrobial presentation and the use of antimicrobial surfaces with intrinsic antibacterial activity. A range of measures to control bio-interfacial interactions including approaches that modify implant surface chemistry or topography to reduce the capacity of bacteria to colonise the surface, form biofilms and cause infections at the device interface and surrounding tissues are also reviewed.
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Sekar S, Lee S. In Situ Facile Synthesis of Low-Cost Biogenic Eggshell-Derived Nanohydroxyapatite/Chitosan Biocomposites for Orthopedic Implant Applications. Nanomaterials (Basel) 2022; 12:4302. [PMID: 36500924 PMCID: PMC9739235 DOI: 10.3390/nano12234302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
In situ facile synthesis and the characterization of nanohydroxyapatite/chitosan (nHAP/CS) biocomposites were investigated for examining their potential applications in orthopedic implant technology. Firstly, the bare nHAP, europium-doped hydroxyapatite (Eu-nHAP), yttrium-doped hydroxyapatite (Y-nHAP), and Eu- and Y-codoped hydroxyapatite (Eu,Y-nHAP) nanoparticles were synthesized by the wet precipitation technique using biowaste-eggshell-derived calcium oxide powders. Then, through ultrasonication using the nanohydroxyapatite/chitosan mixtures (molar ratio = 1:2), the nHAP/CS, Eu-nHAP/CS, Y-nHAP/CS, and Eu,Y-nHAP/CS biocomposites were fabricated. Among them, Eu,Y-nHAP/CS showed higher cell viability (94.9%), higher solubility (pH = 7.6 after 21 days), and greater antibacterial activity than those of the other composites. In addition, Eu,Y-nHAP/CS exhibited improved mechanical properties compared with the other composites. For example, the nanoindentation test displayed the Eu,Y-nHAP/CS-coated 316L stainless steel implant to possess a higher Young's modulus value (9.24 GPa) and greater hardness value (300.71 MPa) than those of the others. The results indicate that the biomass-eggshell-derived Eu,Y-doped nHAP is of good use for orthopedic implant applications.
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Affiliation(s)
- Sankar Sekar
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea
- Quantum-Functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea
| | - Sejoon Lee
- Department of Semiconductor Science, Dongguk University-Seoul, Seoul 04620, Republic of Korea
- Quantum-Functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea
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12
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Erturk P, Altuntas S, Irmak G, Buyukserin F. Bioinspired Collagen/Gelatin Nanopillared Films as a Potential Implant Coating Material. ACS Appl Bio Mater 2022; 5:4913-4921. [PMID: 36203409 PMCID: PMC9580019 DOI: 10.1021/acsabm.2c00633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/30/2022] [Indexed: 11/28/2022]
Abstract
Collagen-based Sharpey's fibers are naturally located between alveolar bone and tooth, and they have critical roles in a well-functioning tooth such as mechanical stability, facile differentiation, and disease protection. The success of Sharpey's fibers in these important roles is due to their unique location, vertical alignment with respect to tooth surface, as well as their micronanofiber architecture. Inspired by these structures, herein, we introduce the use of nanoporous anodic aluminum oxide molds in a drop-casting setup to fabricate biopolymeric films possessing arrays of uniform Collagen:Gelatin (Col:Gel) nanopillars. Obtained structures have diameters of ∼90 nm and heights of ∼300 nm, yielding significantly higher surface roughness values compared to their flat counterparts. More importantly, the nanostructures were parallel to each other but perpendicular to the underlying film surface imitating the natural collagenous structures of Sharpey's fibers regarding nanoscale morphology, geometrical orientation, as well as biochemical content. Viability testing showed that the nanopillared Col:Gel films have high cell viabilities (over 90%), and they display significantly improved attachment (ca. ∼ 2 times) and mineralization for Saos-2 cells when compared to flat Col:Gel films and Tissue Culture Polystyrene (TCPS) controls, plausibly due to their largely increased surface roughness and area. Hence, such Sharpey's fiber-inspired bioactive nanopillared Col:Gel films can be used as a dental implant coating material or tissue engineering platform with enhanced cellular and osteogenic properties.
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Affiliation(s)
- Pinar
Alpaslan Erturk
- TOBB
University of Economics and Technology, Biomedical Engineering, 06560Ankara, Turkey
| | - Sevde Altuntas
- University
of Health Sciences Turkey, Tissue Engineering Department, Experimental Medicine Research and
Application Center, Validebag
Research Park, 34662Istanbul, Turkey
| | - Gulseren Irmak
- Malatya
Turgut Ozal University, Department of Bioengineering, 44210Malatya, Turkey
| | - Fatih Buyukserin
- TOBB
University of Economics and Technology, Biomedical Engineering, 06560Ankara, Turkey
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13
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Bourgat Y, Mikolai C, Stiesch M, Klahn P, Menzel H. Enzyme-Responsive Nanoparticles and Coatings Made from Alginate/Peptide Ciprofloxacin Conjugates as Drug Release System. Antibiotics (Basel) 2021; 10:653. [PMID: 34072352 DOI: 10.3390/antibiotics10060653] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/10/2021] [Accepted: 05/26/2021] [Indexed: 01/11/2023] Open
Abstract
Infection-controlled release of antibacterial agents is of great importance, particularly for the control of peri-implant infections in the postoperative phase. Polymers containing antibiotics bound via enzymatically cleavable linkers could provide access to drug release systems that could accomplish this. Dispersions of nanogels were prepared by ionotropic gelation of alginate with poly-l-lysine, which was conjugated with ciprofloxacin as model drug via a copper-free 1,3-dipolar cycloaddition (click reaction). The nanogels are stable in dispersion and form films which are stable in aqueous environments. However, both the nanogels and the layers are degraded in the presence of an enzyme and the ciprofloxacin is released. The efficacy of the released drug against Staphylococcus aureus is negatively affected by the residues of the linker. Both the acyl modification of the amine nitrogen in ciprofloxacin and the sterically very demanding linker group with three annellated rings could be responsible for this. However the basic feasibility of the principle for enzyme-triggered release of drugs was successfully demonstrated.
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Lung CYK, Abdalla MM, Chu CH, Yin I, Got SR, Matinlinna JP. A Multi-Element-Doped Porous Bioactive Glass Coating for Implant Applications. Materials (Basel) 2021; 14:961. [PMID: 33670658 DOI: 10.3390/ma14040961] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/12/2021] [Accepted: 02/12/2021] [Indexed: 12/31/2022]
Abstract
Objectives: The objectives of the study were (1) to develop a novel multi-element-doped porous 58S bioactive glass coating for titanium implants and (2) to investigate the physiochemical, cell cytotoxic and antibacterial properties of this novel coating for titanium implants. Methods: This study employed the sol–gel method to develop a silver-, cobalt (II) oxide- and titanium dioxide-doped 58S bioactive glass coating. The surface topography and in vitro bioactivity of the new bioactive glass-coated implants were studied using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy. The surface nanohardness and coating degradation were evaluated using atomic force microscopy (AFM) and inductively coupled plasma atomic emission spectroscopy (ICP-AES), respectively. The cell cytotoxicity was assessed using cell viability of osteoblast-like mouse cells. The antibacterial property was examined using colony-forming units (CFUs) of the implant coating against Porphyromonas gingivalis. Results: The multi-element-doped porous 58S bioactive glass-coated titanium implant was synthesized. SEM showed that calcium phosphate was formed on the novel coating but not on the 58S bioactive glass coating. The mean surface nanohardness of the novel coating and the 58S coating were 124 ± 24 and 50 ± 17 MPa, respectively (p < 0.001). ICP-AES showed that the releases of Si, Ca and P ions of the novel coating were significantly higher than that of a 58S bioactive glass-coated implant. No significant difference in cell cytotoxicity was found between the novel coating and the 58S coating (p > 0.1). The mean CFUs of the novel coating and the conventional coating were 120 × 106 and 49 × 106 /mL. Conclusion: A novel multielement-doped porous bioactive glass coating for titanium implants was developed. The coating displays promising biocompatibility and antibacterial activity. Clinical significance: the coating can be used to improve the clinical success of dental implants for patient care if it shows success in clinical trials.
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15
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Yang S, Wang Y, Wu X, Sheng S, Wang T, Zan X. Multifunctional Tannic Acid (TA) and Lysozyme (Lys) Films Built Layer by Layer for Potential Application on Implant Coating. ACS Biomater Sci Eng 2019; 5:3582-3594. [PMID: 33405740 DOI: 10.1021/acsbiomaterials.9b00717] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A multifunctional (TA/Lys)n film, featuring good antioxidant property, fast cell attachment at the initial stage, enhanced osteogenesis, and broad-spectrum antibacterial property, was constructed by the layer-by-layer (LBL) method. The building process was monitored by quartz crystal microbalance with dissipation (QCM-D); the physical properties, such as topography, stiffness in dry and liquid state, and conformation of Lys in the film, were thoroughly characterized. These physical properties were modulated by varying the salt concentration at which the film was constructed. The film not only allows for favorable cell attachment and proliferation of preosteoblasts Mc3t3-E1 but also provides antibacterial property against Gram-positive bacteria, S. aureus and M. lysodeikticus, and Gram-negative bacteria, E. coli. It also displays good antioxidant property, which plays a critical role on fast cell attachment at the initial stage.
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Affiliation(s)
- Shuoshuo Yang
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH, Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, PR China
| | - Yong Wang
- Institute for Energy Research, Jiangsu Uniersity, Zhenjiang 212013, PR China
| | - Xiaoxiao Wu
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, PR China
| | - Sunren Sheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, PR China
| | - Tian Wang
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, PR China
| | - Xingjie Zan
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, PR China.,Wenzhou Institute of Biomaterials and Engineering, CNITECH, Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, PR China.,Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute of Biomaterials and Engineering, Chinese Academy of Sciences, Wenzhou, Zhejiang Province 325001, PR China
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Aboltins CA, Antoci V, Bhattacharyya S, Cross M, Ducheyne P, Freiberg AA, Hailer N, Kay P, Ketonis C, Klement MR, Köse N, Lee M, Mitchell P, Nandi S, Palacio JC, Perry K, Prieto H, Shahi A, Trebše R, Turner D, Wu CT, Yazdi H. Hip and Knee Section, Prevention, Prosthesis Factors: Proceedings of International Consensus on Orthopedic Infections. J Arthroplasty 2019; 34:S309-S320. [PMID: 30348551 DOI: 10.1016/j.arth.2018.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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17
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Cheng BC, Koduri S, Wing CA, Woolery N, Cook DJ, Spiro RC. Porous titanium-coated polyetheretherketone implants exhibit an improved bone-implant interface: an in vitro and in vivo biochemical, biomechanical, and histological study. Med Devices (Auckl) 2018; 11:391-402. [PMID: 30464653 PMCID: PMC6211303 DOI: 10.2147/mder.s180482] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Purpose Spinal interbody fusion cages are designed to provide immediate stabilization for adjoining vertebrae and ideally enable bony ingrowth to achieve successful integration. For such an implant, cells must be able to attach, move, grow, and differentiate on its surface. These cellular interactions are dependent on how the implant surface enables the coating and binding of blood and tissue fluid proteins that support cell adhesion. The purpose of this study was to evaluate the in vitro and in vivo osteoblast cell–implant surface interactions that result in osseointegration onto a surface composed of plasma-sprayed titanium on a polyetheretherketone (PEEK) substrate or titanium-coated PEEK (Ti-PEEK) (PlasmaporeXP®) as compared to uncoated PEEK implants. Materials and methods The influence of the Ti-PEEK surface modification on the biochemical, biomechanical, and histological properties at the bone–implant interface is demonstrated both in vitro using simulated bone-forming cell culture experiments and in vivo using a 12- and 24-week ovine implant model. Results Osteoblast-like cells attached to the Ti-PEEK surface upregulated early bone-forming activity as measured by an increase in transcription and translation of ALP and BMP-2 when compared to cells on PEEK. Similarly, a significant increase in new bone formation, bony apposition, and pullout strength was demonstrated on Ti-PEEK implants when compared to PEEK implants at 12 and 24 weeks in an ovine implant in vivo model. Conclusion The study shows that the Ti-PEEK surface demonstrated enhanced osseointegrative properties compared to PEEK both in vitro and in vivo.
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Affiliation(s)
- Boyle C Cheng
- Neuroscience Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA
| | - Sravanthi Koduri
- Neuroscience Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA
| | - Charles A Wing
- Research and Development, Aesculap Implant Systems, LLC, Breinigsville, PA 18031, USA,
| | - Natalie Woolery
- Research and Development, Aesculap Biologics, LLC, Breinigsville, PA 18031, USA
| | - Daniel J Cook
- Neuroscience Institute, Allegheny Health Network, Pittsburgh, PA 15212, USA
| | - Robert C Spiro
- Research and Development, Aesculap Implant Systems, LLC, Breinigsville, PA 18031, USA, .,Research and Development, Aesculap Biologics, LLC, Breinigsville, PA 18031, USA
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Karahan HE, Wiraja C, Xu C, Wei J, Wang Y, Wang L, Liu F, Chen Y. Graphene Materials in Antimicrobial Nanomedicine: Current Status and Future Perspectives. Adv Healthc Mater 2018; 7:e1701406. [PMID: 29504283 DOI: 10.1002/adhm.201701406] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 01/16/2018] [Indexed: 02/06/2023]
Abstract
Graphene materials (GMs), such as graphene, graphene oxide (GO), reduced GO (rGO), and graphene quantum dots (GQDs), are rapidly emerging as a new class of broad-spectrum antimicrobial agents. This report describes their state-of-the-art and potential future covering both fundamental aspects and biomedical applications. First, the current understanding of the antimicrobial mechanisms of GMs is illustrated, and the complex picture of underlying structure-property-activity relationships is sketched. Next, the different modes of utilization of antimicrobial GMs are explained, which include their use as colloidal dispersions, surface coatings, and photothermal/photodynamic therapy agents. Due to their practical relevance, the examples where GMs function as synergistic agents or release platforms for metal ions and/or antibiotic drugs are also discussed. Later, the applicability of GMs in the design of wound dressings, infection-protective coatings, and antibiotic-like formulations ("nanoantibiotics") is assessed. Notably, to support our assessments, the existing clinical applications of conventional carbon materials are also evaluated. Finally, the key hurdles of the field are highlighted, and several possible directions for future investigations are proposed. We hope that the roadmap provided here will encourage researchers to tackle remaining challenges toward clinical translation of promising research findings and help realize the potential of GMs in antimicrobial nanomedicine.
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Affiliation(s)
- Hüseyin Enis Karahan
- School of Chemical and Biomolecular Engineering The University of Sydney NSW 2006 Australia
- School of Chemical and Biomedical Engineering Nanyang Technological University Singapore 637459 Singapore
- Singapore Institute of Manufacturing Technology Singapore 638075 Singapore
| | - Christian Wiraja
- School of Chemical and Biomedical Engineering Nanyang Technological University Singapore 637459 Singapore
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering Nanyang Technological University Singapore 637459 Singapore
- NTU‐Northwestern Institute of Nanomedicine Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
| | - Jun Wei
- Singapore Institute of Manufacturing Technology Singapore 638075 Singapore
| | - Yilei Wang
- School of Chemistry & Chemical Engineering Tianjin University of Technology 391 Binshui, Xidao, Xiqing District Tianjin 300384 China
| | - Liang Wang
- School of Chemistry & Chemical Engineering Tianjin University of Technology 391 Binshui, Xidao, Xiqing District Tianjin 300384 China
| | - Fei Liu
- State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Institute of Microbiology 100 Central Xianlie Road Guangzhou 510070 China
| | - Yuan Chen
- School of Chemical and Biomolecular Engineering The University of Sydney NSW 2006 Australia
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Lockhart JN, Spoonmore TJ, McCurdy MW, Rogers BR, Guelcher SA, Harth E. Poly(glycidol) Coating on Ultrahigh Molecular Weight Polyethylene for Reduced Biofilm Growth. ACS Appl Mater Interfaces 2018; 10:4050-4056. [PMID: 29345453 PMCID: PMC5831121 DOI: 10.1021/acsami.7b15981] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Semibranched poly(glycidol) (PG-OH) and poly(glycidol allylglycidyl ether) (PG-Allyl) coatings were formed on ultrahigh molecular weight polyethylene (UMWPE) in a unique two-step process which included radiation of UHMWPE followed by grafting of PG-OH or PG-Allyl to the surface via free radical cross-linking. Resulting surfaces were extensively characterized by FTIR-ATR, XPS, fluorescent microscopy, and contact goniometry. The performance was evaluated using the most prominent biofilm-forming bacteria Staphylococcus aureus for 24 and 48 h. The PG-Allyl coating demonstrated a 3 log reduction in biofilm growth compared to noncoated control, demonstrating a promising potential to inhibit adherence and colonization of biofilm-forming bacteria that often develop into persistent infections.
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Affiliation(s)
| | | | | | | | - Scott A Guelcher
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center , Nashville, Tennessee 37235, United States
| | - Eva Harth
- Center of Excellence in Polymer Chemistry, Department of Chemistry, University of Houston , Houston, Texas 77204, United States
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20
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Harwin SF, Patel NK, Chughtai M, Khlopas A, Ramkumar PN, Roche M, Mont MA. Outcomes of Newer Generation Cementless Total Knee Arthroplasty: Beaded Periapatite-Coated vs Highly Porous Titanium-Coated Implants. J Arthroplasty 2017; 32:2156-60. [PMID: 28237217 DOI: 10.1016/j.arth.2017.01.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/05/2017] [Accepted: 01/25/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Newer generation cementless total knee arthroplasty (TKA) designs are available and have novel implant coatings. We evaluated and compared beaded periapatite (PA)-coated vs highly porous titanium-coated cementless TKAs. Specifically, we compared: (1) survivorship, (2) Knee Society Scores (KSSs) and range of motion, (3) complications, and (4) radiographic findings. METHODS There were 805 TKAs with beaded PA-coated tibial and patellar components (PA group; mean age 67 years; range 41-86 years), and 219 TKAs with highly porous titanium-coated tibial and patella components (mean age 66 years; range 34-88 years). Mean follow-up was 4.4 years (range 2-9 years; median 4 years). Implant survivorship was calculated using Kaplan-Meier curves. Student t-tests and chi-square tests were used as appropriate. Radiographic evaluation was performed using Knee Society Roentgenographic Evaluation and Scoring System. RESULTS All-cause implant survivorship in beaded PA-coated group was 99.5% (95% CI, 97.9%-99.9%) and 99.5% (95% CI, 92.7%-99.9%) in highly porous titanium-coated group. There were no significant differences in the KSS for pain and function. Improvement in flexion and extension was similar in the 2 groups. Overall, complication rate (2.2% vs 2.3%; P = .274) and number of revisions (6 [0.8%] vs 2 [0.2%]; P = .936) were similar in the 2 groups. Excluding the aseptic and septic failures, there were no progressive radiolucencies or osteolysis on radiographic evaluation. CONCLUSION This study has shown good clinical and patient-reported outcomes of cementless TKA for both implants. Future multicenter large scale clinical and cost-effectiveness studies are needed to determine the superiority of one cementless implant type over the other.
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Waßmann M, Winkel A, Haak K, Dempwolf W, Stiesch M, Menzel H. Influence of quaternization of ammonium on antibacterial activity and cytocompatibility of thin copolymer layers on titanium. J Biomater Sci Polym Ed 2016; 27:1507-19. [PMID: 27456132 DOI: 10.1080/09205063.2016.1214001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Antimicrobial coatings are able to improve the osseointegration of dental implants. Copolymers are promising materials for such applications due to their combined properties of two different monomers. To investigate the influence of different monomer mixtures, we have been synthesized copolymers of dimethyl (methacryloxyethyl) phosphonate (DMMEP) and dipicolyl aminoethyl methacrylate in different compositions and have them characterized to obtain the r-parameters. Some of the copolymers with different compositions have also been alkylated with 1-bromohexane, resulting in quaternized ammonium groups. The copolymers have been deposited onto titanium surfaces resulting in ultrathin, covalently bound layers. These layers have been characterized by water contact angle measurements and ellipsometry. The influence of quaternary ammonium groups on antibacterial properties and cytocompatibility was studied: Activity against bacteria was tested with a gram positive Staphylococcus aureus strain. Cytocompatibility was tested with a modified LDH assay after 24 and 72 h to investigate adhesion and proliferation of human fibroblast cells on modified surfaces. The copolymer with the highest content of DMMEP showed a good reduction of S. aureus and in the alkylated version a very good reduction of about 95%. On the other hand, poor cytocompatibility is observed. However, our results show that this trend cannot be generalized for this copolymer system.
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Affiliation(s)
- Marco Waßmann
- a Institute for Technical Chemistry , Braunschweig University of Technology , Braunschweig , Germany
| | - Andreas Winkel
- b Clinic for Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Hannover , Germany
| | - Katharina Haak
- a Institute for Technical Chemistry , Braunschweig University of Technology , Braunschweig , Germany
| | - Wibke Dempwolf
- a Institute for Technical Chemistry , Braunschweig University of Technology , Braunschweig , Germany
| | - Meike Stiesch
- b Clinic for Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Hannover , Germany
| | - Henning Menzel
- a Institute for Technical Chemistry , Braunschweig University of Technology , Braunschweig , Germany
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Atefyekta S, Ercan B, Karlsson J, Taylor E, Chung S, Webster TJ, Andersson M. Antimicrobial performance of mesoporous titania thin films: role of pore size, hydrophobicity, and antibiotic release. Int J Nanomedicine 2016; 11:977-90. [PMID: 27022263 PMCID: PMC4790524 DOI: 10.2147/ijn.s95375] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Implant-associated infections are undesirable complications that might arise after implant surgery. If the infection is not prevented, it can lead to tremendous cost, trauma, and even life threatening conditions for the patient. Development of an implant coating loaded with antimicrobial substances would be an effective way to improve the success rate of implants. In this study, the in vitro efficacy of mesoporous titania thin films used as a novel antimicrobial release coating was evaluated. Mesoporous titania thin films with pore diameters of 4, 6, and 7 nm were synthesized using the evaporation-induced self-assembly method. The films were characterized and loaded with antimicrobial agents, including vancomycin, gentamicin, and daptomycin. Staphylococcus aureus and Pseudomonas aeruginosa were used to evaluate their effectiveness toward inhibiting bacterial colonization. Drug loading and delivery were studied using a quartz crystal microbalance with dissipation monitoring, which showed successful loading and release of the antibiotics from the surfaces. Results from counting bacterial colony-forming units showed reduced bacterial adhesion on the drug-loaded films. Interestingly, the presence of the pores alone had a desired effect on bacterial colonization, which can be attributed to the documented nanotopographical effect. In summary, this study provides significant promise for the use of mesoporous titania thin films for reducing implant infections.
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Affiliation(s)
- Saba Atefyekta
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Batur Ercan
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA; Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey
| | - Johan Karlsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Erik Taylor
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Stanley Chung
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Thomas J Webster
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden; Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
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Armencea G, Berce C, Rotaru H, Bran S, Leordean D, Coada C, Todea M, Jula CA, Gheban D, Baciut G, Baciut M, Campian RS. Micro-CT and histological analysis of Ti6Al7Nb custom made implants with hydroxyapatite and SiO2-TiO2 coatings in a rabbit model. ACTA ACUST UNITED AC 2015; 88:408-14. [PMID: 26609278 PMCID: PMC4632904 DOI: 10.15386/cjmed-479] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 06/15/2015] [Accepted: 06/18/2015] [Indexed: 01/22/2023]
Abstract
Background and aim Bone defect reconstruction in the maxillofacial area comes as a necessity after traumatic, oncological or congenital pathology. Custom made implant manufacturing, such as selective laser melting (SLM), is very helpful when bone reconstruction is needed. In the present study we assessed the osseointegration of custom made implants made of Ti6Al7Nb with two different coatings: SiO2-TiO2 and hydroxyapatite, by comparing the bone mineral density (BMD) measured on micro-CT and the histological mineralized bone surrounding the implants. Methods Custom made – cylindrical type – implants were produced by selective laser melting, coated with SiO2-TiO2 and hydroxyapatite and implanted in the rabbit femur. The animals (divided into 3 groups) were sacrificed at 1, 3 and 6 months and the implants were removed together with the surrounding bone. Bone mineral density and histological examination of the bone-implant surface was performed for each group. Results BMD and histological examination of the samples determined the quantity of mineralized bone at the implant site, showing a good percentage of mineralized bone for the coated implants at 1, 3 and 6 months. The measurements for the implants without coating showed a significant lower quantity of mineralized bone at 3 months compared with the implants with coating, and a good quantity of mineralized bone at 6 months, showing a process of demineralization followed by remineralization in the last month. The measurements of BMD showed similar results with the histological examination. Conclusions The use of micro-CT and the measurement of BMD are a reliable, minimally invasive and a quick method of osseointegration assessment.
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Affiliation(s)
- Gabriel Armencea
- Department of Oral and Maxillofacial Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristian Berce
- Laboratory Animal Facility, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Horatiu Rotaru
- Department of Oral and Maxillofacial Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Simion Bran
- Department of Oral and Maxillofacial Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Leordean
- Department of Manufacturing Engineering, Technical University, Cluj-Napoca, Romania
| | - Camelia Coada
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Milica Todea
- Faculty of Physics & Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes Bolyai University
| | - Camelia Augusta Jula
- Student, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Gheban
- Department of Pathology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Grigore Baciut
- Department of Oral and Maxillofacial Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihaela Baciut
- Department of Oral and Maxillofacial Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Radu Septimiu Campian
- Department of Oral Rehabilitation, Oral Health and Management of Dental Office, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Pardun K, Treccani L, Volkmann E, Streckbein P, Heiss C, Gerlach JW, Maendl S, Rezwan K. Magnesium-containing mixed coatings on zirconia for dental implants: mechanical characterization and in vitro behavior. J Biomater Appl 2015; 30:104-18. [PMID: 25698722 DOI: 10.1177/0885328215572428] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An important challenge in the field of dental and orthopedic implantology is the preparation of implant coatings with bioactive functions that feature a high mechanical stability and at the same time mimic structural and compositional properties of native bone for a better bone ingrowth. This study investigates the influence of magnesium addition to zirconia-calcium phosphate coatings. The mixed coatings were prepared with varying additions of either magnesium oxide or magnesium fluoride to yttria-stabilized zirconia and hydroxyapatite. The coatings were deposited on zirconia discs and screw implants by wet powder spraying. Microstructure studies confirm a porous coating with similar roughness and firm adhesion not hampered by the coating composition. The coating morphology, mechanical flexural strength and calcium dissolution showed a magnesium content-dependent effect. Moreover, the in vitro results obtained with human osteoblasts reveal an improved biological performance caused by the presence of Mg(2+) ions. The magnesium-containing coatings exhibited better cell proliferation and differentiation in comparison to pure zirconia-calcium phosphate coatings. In conclusion, these results demonstrate that magnesium addition increases the bioactivity potential of zirconia-calcium phosphate coatings and is thus a highly suitable candidate for bone implant coatings.
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Affiliation(s)
| | | | | | - Philipp Streckbein
- University Hospital, Justus-Liebig-University Giessen, Department of Cranio-Maxillo-Facial Surgery, Germany
| | - Christian Heiss
- University Hospital of Giessen-Marburg, Department of Trauma Surgery, Germany Laboratory of Experimental Surgery, Germany
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Ruther C, Gabler C, Ewald H, Ellenrieder M, Haenle M, Lindner T, Mittelmeier W, Bader R, Kluess D. In vivo monitoring of implant osseointegration in a rabbit model using acoustic sound analysis. J Orthop Res 2014; 32:606-12. [PMID: 24391086 DOI: 10.1002/jor.22574] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 12/06/2013] [Indexed: 02/04/2023]
Abstract
Implant osseointegration can currently only be assessed reliably post mortem. A novel method that relies on the principle of acoustic sound analysis was developed to enable examination of the longitudinal progress of osseointegration. The method is based on a magnetic sphere inside a hollow cylinder of the implant. By excitation using an external magnetic field, collision of the sphere inside the implant produces a sound signal. Custom-made titanium implants equipped thusly were inserted in each lateral femoral epicondyle of 20 New Zealand White Rabbits. Two groups were investigated: Uncoated, machined surface versus antiadhesive surface; and calcium phosphate-coated surface versus antiadhesive surface. The sound analysis was performed postoperatively and weekly. After 4 weeks, the animals were euthanized, and the axial pull-out strengths of the implants were determined. A significant increase in the central frequency was observed for the loose implants (mean pull-out strength 21.1 ± 16.9 N), up to 6.4 kHz over 4 weeks. In comparison, the central frequency of the osseointegrated implants (105.2 ± 25.3 N) dropped to its initial value. The presented method shows potential for monitoring the osseointegration of different implant surfaces and could considerably reduce the number of animals needed for experiments.
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Affiliation(s)
- Cathérine Ruther
- Department of Orthopedics, University Medicine Rostock, Doberaner Strasse 142, D-18057, Rostock, Germany
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Trajkovski B, Petersen A, Perka C, Scharnagl N, Wischke C, Wagermaier W, Lendlein A, Duda GN. Local drug delivery by personalized, intraoperative custom-made implant coating. J Biomed Mater Res B Appl Biomater 2013; 101:950-63. [PMID: 23529921 DOI: 10.1002/jbm.b.32900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 10/18/2012] [Accepted: 12/20/2012] [Indexed: 11/06/2022]
Abstract
Local administration of drugs can enhance regeneration, prevent infection, or treat postsurgical pain. If used in conjunction with implants, coating strategies should allow the choice of a drug or combination of drugs, their doses, localization, and release due to intraoperative considerations. Current coating technologies lack the ability for personalized medicine strategies. Here, we describe a new intraoperative strategy for drug delivery that allows a personalized approach as local drug delivery by implant coating. A polyvinylalcohol (PVA) patch provides rapid attachment to implant surfaces by cyanoacrylate (CA) adhesives. The CA polymerization was initiated by water uptake of the patch due to exposure to a humid environment. The coating strength depended on the type of the CA, the time of external pressing load and humidification, the properties of the patch and the implant surface. The CA adhesive penetrated and polymerized within the patch without impeding the bioactivity of the embedded molecules or strongly altering the protein release pattern after attachment to the implant surface. The use of CA in combination with the PVA patch proved to be noncytotoxic in vitro. This technology platform opens the possibility for personalized medicine to locally administer drugs due to intraoperative requirements.
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Affiliation(s)
- B Trajkovski
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
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